试题与答案

电压升高时,电动机的转矩、转速、启动电流都随之();一般情况下,当端电压与额定电压的

题型:填空题

题目:

电压升高时,电动机的转矩、转速、启动电流都随之();一般情况下,当端电压与额定电压的差值不超过()时,电动机的输出功率能维持额定值。

答案:

参考答案:增大;±5%

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题型:写作题
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A: Leo, I don’t want to cook lunch.
B:         小题1:       
A: Good idea! Let’s go.
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C:         小题2:       
A: Yes, some rice, fish and vegetables, please.
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C:         小题3:       
B: Some jiaozi, please.
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C: OK.         小题5:      
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E. That’s all right.
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